If we got anyone from that series, i would prefer just about anyone except Nou. She's got an interesting personality, but she'd just be a Juri ripoff in DoA. Also, her mouth is larger (no pun intended). Kunoichi would fit DoA a little too well (and end up being an Ayane clone with a better personality). Nene would be interesting. Kai would also be fun. I'd really like Gracia, but given that Kasumi has been given her costume, i doubt she'd make it. She'd actually attract ALOT of people, especially if they give her a story closer to the real person than her warriors appearance. I could go on, but we know that you practically can't bring people from warriors without first bringing Oda Nobunaga, whom would be shown at the front instead of his wife. Given the trend though, the Female Tengu would not surprise me, and she would likely be followed by a "moon person" like Kaguya. That's when we know they've thoroughly run out of ideas (with Kaguya, not a female tengu) and are just building their final, over-the-top roster (in which case we know that they'll never focus on the normal characters, because they won't add anything normal after that).